Automatic air-brake.



No, 772,702.Y

No MODEL -PATENTED OCT. 18, 1904. W. AF. DBLANGY. AU'I'OIVIA'I'IC AIR BRAKE.

APPLICATION FILED 113.5. 1904.

2 SHEETS-sum1.

l WL l1 PATENTED OCT. 18, 1904.

W. E. DBLANGY. AUTOMATIC AIR B RAKB.

APPLIOATION FILED FEB.5, 1904.

N0 MODEL.

2 SHEETS-SHEET 2.

[(r'al 105511621/ @Aj w matic Air-Brakes, of Vwhich the following is v Y UNITEDv STATES Patented October 18, 1904.

`PATENT OFFICE.

AUTOMATIC AIR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 772,702, dated October 18, 1904.

I AApplication filed February 5, 1904. Serial No. 192,134. (No model.)

T0 all whom t may concern;

Be it known that I, WILLIAM E. DELANCY, a citizen of the United States, and a resident of Adams', in the county of Berkshire and State of Massachusetts, have invented certainnew and useful Improvements in Autoa specification.

My invention relates to air-brakes. vIt has for its object to provide an air-brake constructed and arranged to be mounted on a car or other vehicle and be manually controlled by the motorlnan or brakeman and means for automatically regulating the air-pressure in the coInpressed-air-storage cylinder for operating the brakes. y

It has for a further object to provide a device of the character set forth embodying advantages in point of perfect operation, simplicity, general utility, and inexpensiveness. In the drawings, Figurel is-a top plan view of my air-brake, the bottom of the car to which it is attached being indicated in dotted lines.` Fig. 2 isa horizontal sectional view taken through the several cylinders. Fig. 3 is a detail View showing the `suspended gearwheel in engagement with the axle-gear in full lines and out of engagement therewith in dotted lines. Fig. 4 is a fragmentary view showing the means for guiding the frame 3.

Corresponding parts in all the iigures'are denoted by the same reference characters.

Referring to the drawings, in which for the purpose of illustration I have shown my brake applied to a car, 1 designates a crankaxle journaled in the lower forked ends of a centrally-pivoted foldable arm 2, the upper end of which is pivotally connected to a frame 3, vertically slidable on guides 3, secured'to the bottom of the car directly over one of the axles, and the lower ends of the frame having holes through which the car-axle extends and in which it revolves, and said crankaxle has a gear-Wheel 4 thereon between the vforked ends of the arm 2 and adapted to be thrown into and out of engagement with a gear-wheel 5 on the car-axle, whereby the crank-axle is rotated or its rotation stopped, as the case may be.

One end of a rod 6 is connected to the pivot of the arm 2, and its other end has a slidable joint connection at 4 with one end of a short arm 7 to be described,j the other end of the short'arm being pivotally Vconnected to one end of a lever 8, pivoted at 9 on the bottom of the car, said lever being pivotally connected'at its ends to brake-rods 10 and 11, pivotally'connected to the ypivoted levers 12 and 13, respectively, for operating the front and rear brake-beams 14 14L and 15 15, respectively. The slidable joint connection 4 comprises a cylinder 4h, having flanges 4C at each end, a hole 4d extending through it, and a collar 4e is loosely mounted upon and adapted to slide on said cylinder between the flanges 4. at one end of the cylinder, and the short arm 7 slides into the hole 4d at the opposite end of the cylinder.

A compressed-air-storage cylinder 14D is supported on the bottom of the car between the front and rear axlesand on one side communicates with two air-compression cylinders 16 and` 17 for compressing air therein, the pis- `ton-rods 18 and 19 on said compression-cylinders being connected to the cranks 2O and 21,

respectively, of the axle 1, whereby they are reciprocated in their cylinder.

` For the purpose of turning the lever 8 on its pivot, and thereby operating the brake-beams to contact with the car-wheels through the medium of the brake-rods 10 and 1l, a pipe 2,2 runs out of one end of the compressed-airstorage cylinder 14b and into one end of a cornpression-cylinder 23, and the piston-rod 24 of said cylinder 23 projects out of the opposite end and is pivotally connected with said lever 8.

For the purpose of placing the feeding of compressed air to said cylinder 23 under the control of the motorrnan or brakeman-a valve 42 is'located in the pipe 22.

For the purpose of automatically controlling the air-pressure in the compressed-airstorage cylinder a regulating-cylinder 25 communicates at one end with the opposite side of the compressed-air-storage cylinder 14b to that of the ai r-coinpression cylinders, and the piston-rod 26 of said cylinder 24 projects through its outer end, the inner end of said TOO piston-rod 25 having a coil-spring 27 thereon for holding it and its piston normally in their inner position, as shown in dotted lines in Fig. 2, and the outer end of the piston-rod is pivotally connected to one end of a lever 28, pivoted at 29 on the bottom of the car, and the other end oi' the lever 28 is pivotally connected by a link 30 with one endof a lever 3l, pivoted at 32 on the bottom of the ear and having' its other end connected to the collar 4, whereby when the piston rod 2G is being forced outwardly by its piston into the position shown in full lilies in Fig. 2 the rod (S will pull the arm 2 and the cog-wl1eel4into the position shown in dotted lines in Fig. 3,thereby stopping the compression of air, and when the piston on the piston-rod 26 is allowed' to be forced inwardly by the spring' 27 the rod 6 will push the arm 2 into the position shown in full lines in Fig. 3, thereby starting the compression oi' air.

The operation is as follows: The gear-wheels L and 5 being in engagement when the car is started the crank-axle will be revolved and will start the air-compressors to compressing' air in the compressed-air-storage cylinder, when if the valve 42 be opened by themotorman or brakeman air will be forced through the pipe 22 into the cylinder 23, forcing its piston outwardly and turning the lever 8 on 'its pivot, and by its intermediate connections with the brake-beams it will force them into engagement with the car-wheels, and thereby stop the ear, and it' air is compressed above a certain degree in the compressed-air cylinder the piston-rod 27 and its piston will be forced outwardly, contracting the spring' 27, and by the intermediate connections of said pist-onrod with the pivoted arm 2 said arm will be folded, thus drawing the cog-wheel thereon out of engagement with the cog-wheel on the car-axle and stopping the air compression.

lt will thus be understood that when airis compressed to a certain degree in the compressed-air-storage cylinder it' the valve 42 is opened the brakes will be set to stop the ear and that when air is compressed above such degree in the compressed-air-storage cylinders the regulator will operate to disconnect the gear-wheels et and 5 and stop the compression of air therein.

I claiml. An air-brake for cars, comprising a gear on the car-axle, brake-beams, a compressedair-storage cylinder, compression-cylinders communicating'therewith for compressing' air therein to operate the brake-bean'is, pistons therein, a crank-axle to which the pistons are connected, a gear on said axle adapted to be engaged and disengaged with the gear on the car-axle, a foldable arm in which the crankaXle is suspended from the car-body, and a regulating-cylinder communicating' with the compressed -air-storage cylinder, a piston therein and connections between said piston and foldable arm for folding and unfolding it to respectively disengage and engage the gear-wheels, substantially as described.

2. An air--brake forcars, comprising a gear on the car-axle, brake-beams, a compresseda-ir-storage cylinder, compressioil-cylinders communicating therewith for compressing air therein to operate the brake-beams, pistons therein, aerank-axle to which the pistons are connected, a g'ear on said axle adapted to be cngaged and disengaged with the gear on the ca 1'- axle, a foldable arm in which the crank-axle is suspended from the car-body, a regalatiiig-cylinder communicating with the compressedair-storage cylinder, a piston therein and connections between said piston and loldable arm for folding and unfolding it to respectively disengage and engage the gear-wheels, substantially as described.

3. An air-brake for cars, comprising a gear on the car-axle, brake-beams, a compressedai r-storage cylinder, compression-eylinders communicating therewith for compressing air therein to operate the lnake-beams, pistons therein, a crank-axle to which the pistons are connected, a gear on said axle adapted to be engaged and disengaged with the gear on the car-axle, a foldable arm for suspending said crank-axle, a regulating-cylinder communieating with the compressed-air-storage cylinder, a piston therein and connections between said piston and foldable arm, for iolding and unfolding it to respectively disengage and engage the gears, a compressioncylinder communicating' with the compressedair-storage cylinder, a piston therein, and connections between said piston and the brakebeams, substantially as describe l.

4. An air-brake for ears, comprising a gear on the ear-axle, brake-beams, a eon'ipressedair-storage cylinder, compression-cylinders communicating therewith for com pressing air therein to operate the brake-beams, pistons therein, a crank-axle to which the pistons are connected, a gear on said axle adapted to be engaged and disengaged with the gear on the car-axle, a foldable arm for suspending said crank-axle, a regulating-cylinder communieating with the compressed-air-storage cylinder, a piston therein, connections between said piston and foldable arm, for folding and unfolding it to respectively disengage andengage the gears, a compression-cylinder communicating with the compressed-air-storage cylinder, a piston therein, connections between said piston and the brake-beams, and a slidable connection between the piston el regulating-cylinder and the piston oi the seeond -mentioned compression -cylinder, substantially as described.

5. An air-brake for cars, comprising a gear on the car-axle, ln'ake-beams, a compressedair-storage cylinder, compression-cylinders communicating' therewith for eompressin air therein to operate the brake-beams, pistons IOO therein, a crank-axle to which the pistons are car-axle, a regulating-cylinder communicating with the compressed-air-storage cylinder, a

piston therein, a pivoted lever, connections between said lever and said pistons andbetween said lever and the crank-axle for engaging and disengaging said gears, a compression -cylinder communicating with the compressed air storage cylinder, a piston therein, a pivoted lever to which said piston is connected, connections between 'said lever and the brake-beams and slidahle connections between said levers,substantially as described.

6. An air-brake for cars, comprisinga gear on the car-axle, brake-beams, a compressedair-storage cylinder, compression-'cylinders communicating therewith for compressing air therein to operate the brake-beams, pistons therein, a crank-axle to which 'the pistons are connected, a gear on said axle adapted to be engaged with the gear on the car-axle, a regulating-cylinder `communicating with the compressed-air-storage cylinden'a plston therein, a pivoted lever, connections between said lever and said piston and between said lever and the crank-axle for engaging and disen- 'gaging said gears, a compressed-air-storage cylinder, a piston therein, a pivoted lever to which said piston is connected, connections "between said lever and the brake-beams, slid- ,last mentioned compression cylinder, substantially as described.

In testimony whereof I have signed my name in the presence of the subscribingv witnesses.

WILLIAM E. DELANCY.

Witnesses:

FRANKLIN H. B. MUNSON, EUGENE L. DELANCY. 

